fix(web,miniprogram): 端到端测试修复 + 小程序接口字段对齐

## 前端修复
- 修复 9 个 TypeScript 编译错误（未使用变量/undefined 守卫/vitest 类型）
- 重写 E2E auth fixture 使用真实 API 登录替代 mock token
- 更新 E2E 测试选择器适配当前 UI 布局
- Playwright 改为串行执行避免 token 唯一约束冲突
- E2E 测试从 0/10 通过提升到 10/10 通过

## 小程序接口一致性修复（P0-P3）
- P0: consultation.ts type→consultation_type, unread_count→unread_count_patient
- P0: followup.ts task_type→follow_up_type, due_date→planned_date, description→content_template
- P1: appointment.ts calendarView 展平嵌套结构, available_count 计算 max-current
- P1: doctor.ts HealthSummary 适配后台实际返回结构
- P2: doctor.ts PatientStats/ConsultationStats/FollowUpStats 字段名对齐
- P3: article.ts 新增 buildCategoryTree 工具函数

apps/miniprogram/src/pages/followup/detail/index.tsx

@@ -101,7 +101,7 @@ export default function FollowUpDetail() {
   return (
     <View className='detail-page'>
       <View className='detail-card'>
-        <Text className='detail-title'>{task.task_type}</Text>
+        <Text className='detail-title'>{task.follow_up_type}</Text>
         <View className='detail-row'>
           <Text className='detail-label'>状态</Text>
           <Text className={`detail-value ${getStatusClass(task.status)}`}>
@@ -110,19 +110,19 @@ export default function FollowUpDetail() {
         </View>
         <View className='detail-row'>
           <Text className='detail-label'>截止日期</Text>
-          <Text className='detail-value'>{task.due_date}</Text>
+          <Text className='detail-value'>{task.planned_date}</Text>
         </View>
         {(() => {
-          const cd = getCountdown(task.due_date, task.status);
+          const cd = getCountdown(task.planned_date, task.status);
           return cd ? (
             <View className={`countdown ${cd.urgent ? 'countdown-urgent' : ''}`}>
               <Text className='countdown-text'>{cd.text}</Text>
             </View>
           ) : null;
         })()}
-        {task.description && (
+        {task.content_template && (
           <View className='detail-desc'>
-            <Text className='detail-desc-text'>{task.description}</Text>
+            <Text className='detail-desc-text'>{task.content_template}</Text>
           </View>
         )}
       </View>